MPCA Air Quality Index for Minnesota

AQI Locations:

Rochester
Brainerd
Duluth
Ely
St Cloud
Twin Cities
Marshall
Detroit Lakes

Call the AQI Hotline for daily air quality forecasts for the Twin Cities and Rochester at 651-297-1630 (metro) or 1-800-657-3694.

AQI Site Help

About the AQI

Pollutant description

Health effects

Cautionary Statements

Breakpoints

Map of Air Quality Stations

Color Legend:

Good	0-50
Moderate	51-100
Unhealthy for Sensitive Groups	101-150
Unhealthy	151-200
Very Unhealthy	201-300

Minnesota Pollution Control Agency Duluth Hourly Ozone 8 Hour Rolling March 18, 2012
<< Previous Day		Next Day >>

Ozone 8 Hour Rolling
Parts per Million
Sites

Hour	7416	7550
0	0.032	Invalid
1	0.030	Invalid
2	0.027	Invalid
3	0.025	Invalid
4	0.023	Invalid
5	0.021	Invalid
6	0.019	Invalid
7	0.019	Invalid
8	0.018	Invalid
9	0.018	Invalid
10	0.020	Invalid
11	0.022	Invalid
12	0.023	Invalid
13	0.025	Invalid
14	0.027	Invalid
15	0.030	Invalid
16	0.032	Invalid
17	0.033	Invalid
18	0.034	Invalid
19	0.034	Invalid
20	0.034	Invalid
21	0.033	Invalid
22	0.031	Invalid
23	0.029	Invalid

Ozone 8 Hour Rolling
AQI
Sites

7416	7550
27	Invalid
25	Invalid
22	Invalid
21	Invalid
19	Invalid
17	Invalid
16	Invalid
16	Invalid
15	Invalid
15	Invalid
16	Invalid
18	Invalid
19	Invalid
21	Invalid
22	Invalid
25	Invalid
27	Invalid
27	Invalid
28	Invalid
28	Invalid
28	Invalid
27	Invalid
26	Invalid
24	Invalid

If you have suggestions on how we can improve this site, or if you have questions or problems, please contact us.
If you have technical questions or problems with this site, contact webmaster@pca.state.mn.us
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155-4194
Phone: 651-296-6300, 800-657-3864; 24-hour emergency number: 651-649-5451 or 800-422-0798; TTY: 651-282-5332, TTY 24-hour emergency number: 651-297-5353 or 800-627-3529

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